Receptacle for incandescent electric lamps.



J. S. CROSSLBY. BEOEPTAGLE FOB INGANDBSCBNT ELECTRIC LAMPS.

APPLICATION FILEDDBG. 31, 1910.

Patnted Dec.

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w/mfssfs @TTS JAMES s. oEossLEY, or sOLvAY, NEW YORK, Ass'relvon To PAss a SEYMOUR, Inc., or soLvAY, NEW YORK, A CORPORATION.

RECEPTA'CLEYFOR IN ANDESCENT ELECTRIC LAMES.

Specification of Letters Patent.

Patented nee. ie, 1ers.

Appncauon fuea'lnecember 31, 1910. lserial No. 600,304.

To ZZ avlium it may concern Be it known that I, JAMES'S. CRossLEY, a citizen of the United States, residing at Solvay, in the county of Onondaga and State of New York, have invented new and useful lmprovementsl` in Receptacles for Incandescent Electric Lamps, of which the following is a specication. s

My invention relates tewater-proof receptacles for incandescent electric lamps and consists in certain improvements in the formation of the porcelain body "whereby the lamp terminals are better insulated and more correctly maintained in position and fthe manufacture ot' the device is simplified.

The essential feature of my improvement is a plurality of integral ribs in the interior of the porcelain body or cup preferably formed as shown.

My invention is illustrated in the drawingv herewith in which the reference numerals of this description are used to indicate the same parts in all the figures.

Figure l is a vertical longitudinal section of the complete receptacle, taken on line ite-a of Fig. 4. Fig. 2 is a similar vertical section taken on line b-Z of F ig. 4. Figs.

and 4. are respectively top and bottomlplan views of the porcelain body of the receptacle. Fig. 5 is a vertical sectional AView of thc'porcelain body.

In the figures l indicates the body, or cup, made of porcelain, or of other suitable insulating material, having the usual external form. It is provided with the holes 2 2 for the conductors 3 Sand with the intermediate hole 4 for the running in of the insulating cement. On the interior of the cup are molded the longitudinal ribs 5 5 preferably terminating in the beveled ends G a short distance from the margin/of the cup and preferably extending upto the base for convenience in molding. There should be at leastthree or four of' these yribs for two would accomplish only in an imperfect degree the result of centering the terminals and maintaining them true.

la the process of manufacture, the outer screw-threaded lamp terminal 7 andl the inner terminal 8 are usually provided each with a short length otconductor cord before being arranged and secured in the porcelain body. They may dcsirably be initially assembled as here indicated in connection with ay porcelain button lO fitted-to 1 of insulating material a groove 9 in the threaded shell, and having a recess l1 in its upper surface to per-l mit the soldering of one conductor to the inner, or central, terminal 8. Said terminal has a bushing fitting a central hole in the button in which the conductor Wire my be inserted giving a good contact and a strong connection.

parts are set in the cup from the mouth end.-

With the conductors extending through the Jrespective holes, and are then pressed, or pulled,-home, with the flaring end 14 of the shell fitting the beveled ends 6 of the ribs.' These 'ribs thus insure the parts assuming the correct position in the cu as shown in Fig. 1 with the flaring end o the outer terminal pressed against the beveled ends of the ribs and the margin of-said end fitting close to the porcelain at 'all points Considerable and suflicient As pace is left around and above the terminals, whchniay The other conductor Amay be soldered to the exterior of the shell at any be filled with an insulating cement sccuring the parts firmly in place.

Having described my inventiom claim,

1. In a Water proof receptacle for incan-y descent electric lamps,

having a plurality acup-shaped bodyr of ribs on its inner surface extending from about the base nearly, but vno tiquite, tothe margin ofthe cup' .said ,ribs having their marginal ends beve ed, a substantially tubular Outer lamp'terminal, having a flaringouter end, said terminal being set in 'the body substantially in contactwithithe ribs and ,having` said flaring end arranged in engagement withthe beveled lends of the ribs and tle' margin of said end ittin snugly the inner Wall of` thecup, a centra lamp terminal 'suitably secured in the base of the cup, and insulating cement filling the space within the cup -around the outer terminal and between the ribs.A

2. In a Waterproof receptacle for ineen-' descent electric lamps, a cup-shaped fporce- R lain body provided with a recess the lamp terminals, the Wall of said recess being provided with a series ofrbs afor engaging with and maintaining in correct sition the outer lamp terminal, said ribs ing continuous and of equallength and el:- tending from the uppelgclosed end ofthe recess down nearly to the mouth of the recess and terminating e short distance Withn said mouth in beveled ends.

3. A Water-proof receptacle for incandescent electrie lamps comprising a porcelain cup having an open mouth at its lower end and three holes through the Wall Which closes its upper end, a series of integral ribs on the inner surface of the cup terminating :L short distance within the mouth of the cup in beveled ends, a threaded, tubular, lamp terminal set in the lcup and having a 'Haring end engaging with said ends, a small center terminal suitably insulated and arranged at the upper end of the tubular terminal, conductors extending in through two of said holes and connected to the respective terminals and insulating cement filling the spaces between the terminals and the Wall of the cup, substantially as described and shown.

. In testimony whereof I have signed my name' to this specication. in the presence-of two subscribing Witnesses.

JAMES S. CROSSLEY. Witnesses B. E. SALISBURY, L. M. DAvIsoN. 

